Api代码收集

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 1     #region 隐藏系统滚动条

 2     protected override void WndProc(ref System.Windows.Forms.Message m)

 3     {

 4       ShowScrollBar(this.Handle, 3, false);//0:horizontal,1:vertical,3:both

 5       base.WndProc(ref m);

 6     }

 7 

 8     [DllImport("user32.dll")]

 9     [return: MarshalAs(UnmanagedType.Bool)]

10     private static extern bool ShowScrollBar(IntPtr hWnd, int wBar, bool bShow);

11     #endregion

 

 1     #region 得到光标在屏幕上的位置

 2    [DllImport("user32")]

 3     public static extern bool GetCaretPos(out Point lpPoint);

 4     [DllImport("user32.dll")]

 5     private static extern IntPtr GetForegroundWindow();

 6     [DllImport("user32.dll")]

 7     private static extern IntPtr GetFocus();

 8     [DllImport("user32.dll")]

 9     private static extern IntPtr AttachThreadInput(IntPtr idAttach, IntPtr idAttachTo, int fAttach);

10     [DllImport("user32.dll")]

11     private static extern IntPtr GetWindowThreadProcessId(IntPtr hWnd, IntPtr ProcessId);

12     [DllImport("kernel32.dll")]

13     private static extern IntPtr GetCurrentThreadId();

14     [DllImport("user32.dll")]

15     private static extern void ClientToScreen(IntPtr hWnd, ref Point p);

16 

17     private Point CaretPos()

18     {

19         IntPtr ptr = GetForegroundWindow();

20         Point p = new Point();

21 

22         //得到Caret在屏幕上的位置   

23       if (ptr.ToInt32() != 0)

24         {

25             IntPtr targetThreadID = GetWindowThreadProcessId(ptr, IntPtr.Zero);

26             IntPtr localThreadID = GetCurrentThreadId();

27 

28             if (localThreadID != targetThreadID)

29             {

30                 AttachThreadInput(localThreadID, targetThreadID, 1);

31                 ptr = GetFocus();

32                 if (ptr.ToInt32() != 0)

33                 {

34                     GetCaretPos(out   p);

35                     ClientToScreen(ptr, ref   p);

36                 }

37                 AttachThreadInput(localThreadID, targetThreadID, 0);

38             }

39         }

40         return p;

41     }

42     #endregion

 

 1 //如何在全屏时notifyIcon依然能够弹出ShowBalloonTip

 2 [DllImport("user32.dll",EntryPoint = "GetForegroundWindow", CharSet = CharSet.Auto, ExactSpelling = true)]

 3 public static extern IntPtr GetForegroundWindow(); //获得本窗体的句柄

 4 [DllImport("user32.dll", EntryPoint = "SetForegroundWindow")]

 5 public static extern bool SetForegroundWindow(IntPtr hWnd);//设置此窗体为活动窗体

 6 

 7 if (this.Handle != GetForegroundWindow())

 8 {

 9     SetForegroundWindow(this.Handle);

10     notifyIcon1.ShowBalloonTip(1500,"注意注意","XXXXXXX！",ToolTipIcon.Warning);

11 }